Trip packages are uncommon in business travel, but the concept isn't new. Daimler may become the first major corporate account to go all-in. In partnership with AirPlus, Amadeus and BCD Travel, the car maker is testing a program of intentionally limited choice.

After employees select travel dates and trip components, the Amadeus Cyrtic online booking system returns just a few relevant packages based on "historical behavior, corporate policy, corporate supplier strategy and preferences," according to a press release BCD Travel issued last week . . .

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